gimplify-be.h: New file.

	* gimplify-be.h:  New file.  Add prototypes.
	* gimplify.h: Don't include gimple.h.
	(struct gimplify_hasher, struct gimplify_ctx, is_gimple_sizepos,
	gimplify_hasher::hash, gimplify_hasher::equal): Relocate from gimple.h.
	* gimple.h (struct gimplify_hasher, gimplify_hasher::hash,
	gimplify_hasher::equal, struct gimplify_ctx, is_gimple_sizepos): Move
	to gimplify.h.
	(enum gsi_iterator_update): Move to gimple-iterator.h.
	* gimple-iterator.h (enum gsi_iterator_update): Relocate from gimple.h.
	* gimplify-be.c: New File.
	(force_gimple_operand_1, force_gimple_operand,
	force_gimple_operand_gsi_1, force_gimple_operand_gsi): Relocate from
	gimplify.c.
	* gimplify.c (force_gimple_operand_1, force_gimple_operand,
	force_gimple_operand_gsi_1, force_gimple_operand_gsi): Move to
	gimplify-be.c.
	* Makefile.in (OBJS): Add gimplify-be.o
	* asan.c: Include only gimplify.h, gimplify-be.h, and/or gimple.h as
	required.
	* cfgloopmanip.c: Likewise.
	* cgraphunit.c: Likewise.
	* cilk-common.c: Likewise.
	* fold-const.c: Likewise.
	* function.c: Likewise.
	* gimple-expr.c: Likewise.
	* gimple-fold.c: Likewise.
	* gimple-ssa-strength-reduction.c: Likewise.
	* gimple.c: Likewise.
	* graphite-clast-to-gimple.c: Likewise.
	* graphite-sese-to-poly.c: Likewise.
	* ipa-prop.c: Likewise.
	* ipa-split.c: Likewise.
	* ipa.c: Likewise.
	* langhooks.c: Likewise.
	* omp-low.c: Likewise.
	* sese.c: Likewise.
	* stor-layout.c: Likewise.
	* targhooks.c: Likewise.
	* trans-mem.c: Likewise.
	* tree-affine.c: Likewise.
	* tree-cfg.c: Likewise.
	* tree-cfgcleanup.c: Likewise.
	* tree-complex.c: Likewise.
	* tree-if-conv.c: Likewise.
	* tree-inline.c: Likewise.
	* tree-loop-distribution.c: Likewise.
	* tree-nested.c: Likewise.
	* tree-parloops.c: Likewise.
	* tree-predcom.c: Likewise.
	* tree-profile.c: Likewise.
	* tree-scalar-evolution.c: Likewise.
	* tree-sra.c: Likewise.
	* tree-ssa-address.c: Likewise.
	* tree-ssa-ccp.c: Likewise.
	* tree-ssa-dce.c: Likewise.
	* tree-ssa-forwprop.c: Likewise.
	* tree-ssa-ifcombine.c: Likewise.
	* tree-ssa-loop-im.c: Likewise.
	* tree-ssa-loop-ivopts.c: Likewise.
	* tree-ssa-loop-manip.c: Likewise.
	* tree-ssa-loop-niter.c: Likewise.
	* tree-ssa-loop-prefetch.c: Likewise.
	* tree-ssa-loop-unswitch.c: Likewise.
	* tree-ssa-math-opts.c: Likewise.
	* tree-ssa-phiopt.c: Likewise.
	* tree-ssa-phiprop.c: Likewise.
	* tree-ssa-pre.c: Likewise.
	* tree-ssa-propagate.c: Likewise.
	* tree-ssa-reassoc.c: Likewise.
	* tree-ssa-sccvn.c: Likewise.
	* tree-ssa-strlen.c: Likewise.
	* tree-ssa.c: Likewise.
	* tree-switch-conversion.c: Likewise.
	* tree-tailcall.c: Likewise.
	* tree-vect-data-refs.c: Likewise.
	* tree-vect-generic.c: Likewise.
	* tree-vect-loop-manip.c: Likewise.
	* tree-vect-loop.c: Likewise.
	* tree-vect-patterns.c: Likewise.
	* tree-vect-stmts.c: Likewise.
	* tree.c: Likewise.
	* tsan.c: Likewise.
	* value-prof.c: Likewise.
	* config/aarch64/aarch64.c: Likewise.
	* config/alpha/alpha.c: Likewise.
	* config/darwin.c: Likewise.
	* config/i386/i386.c: Likewise.
	* config/ia64/ia64.c: Likewise.
	* config/mep/mep.c: Likewise.
	* config/mips/mips.c: Likewise.
	* config/rs6000/rs6000.c: Likewise.
	* config/s390/s390.c: Likewise.
	* config/sh/sh.c: Likewise.
	* config/sparc/sparc.c: Likewise.
	* config/spu/spu.c: Likewise.
	* config/stormy16/stormy16.c: Likewise.
	* config/tilegx/tilegx.c: Likewise.
	* config/tilepro/tilepro.c: Likewise.
	* config/xtensa/xtensa.c: Likewise.

	* c/c-typeck.c: Include only gimplify.h and gimple.h as needed.
	* c-family/c-common.c: Likewise.
	* c-family/c-gimplify.c: Likewise.
	* c-family/cilk.c: Likewise.

	* cp/class.c: Include only gimplify.h and gimple.h as needed.
	* cp/cp-gimplify.c: Likewise.
	* cp/error.c: Likewise.
	* cp/init.c: Likewise.
	* cp/optimize.c: Likewise.
	* cp/pt.c: Likewise.
	* cp/semantics.c: Likewise.
	* cp/tree.c: Likewise.
	* cp/vtable-class-hierarchy.c: Likewise.

	* fortran/trans-expr.c: Include only gimplify.h and gimple.h as needed.
	* fortran/trans-openmp.c: Likewise.

	* go/go-lang.c: Include only gimplify.h and gimple.h as needed.

	* java/java-gimplify.c: Include only gimplify.h and gimple.h as needed.

	* objc/objc-act.c: Include only gimplify.h and gimple.h as needed.

From-SVN: r204812